Everything has its pecking order, and geology is no exception. The cocks of the rocks are the big, swaggering periods of the past that fill books, television programmes and natural-history museums.

Every other Friday, the Outside/In team answers a listener question about the natural world. This week’s question comes from Emily in Washington, DC. Crawford Lake in Milton, Ontario. The answer to ...

A new international study published in Earth and Planetary Science Letters reveals that the boundaries between geological epochs and periods, even though randomly distributed, follow a hidden, ...

In 2016, researchers from the EDDyLab - Evolution & Diversity Dynamics Lab - at the University of Liège (Belgium) proposed a new definition of the geological boundary between the Devonian and ...